Firearm



Sept. 24, 1940.

E. s. POMEROY FIREARM Filed June 28, 1939 Patented Sept. 24, 1940 STATES Application June 28, 1939, Serial No. 281,558

7 Claims.

This invention relates to firearms and more particularly to submachine guns or other firearrns having a removable fore-grip.

Objects of the invention are to provide means for attaching, to a firearm receiver, a barrel or a sight or a fore-grip or a cartridge holder, or any two or more of these parts, which is simple and inexpensive to manufacture, which may be assembled and disassembled quickly and easily, which is reliable and durable in use and which is generally superior to prior art constructions.

For the purpose of illustration a typical embodiment is shown in the accompanying drawing in which:

Fig. 1 is a side elevation of a firearm embodying the invention;

Fig. 2 is a top plan View;

Fig. 3 is a front elevation on an enlarged scale;

Fig. 4 is a section on line 4-4 of Fig. 2; and

Fig. 5 is a section on line 55 of Fig. 1.

The particular embodiment of the invention chosen for the purpose of illustration comprises a stock I, a receiver 2, a frame 3 telescoping over the rear end of the receiver 2 and carrying the stock I, a barrel 4 and a fore-grip 5. Slidable longitudinally in the bore 6 of the receiver 2 is a reciprocating bolt carrying an actuator l which projects through a slot 8 in the receiver. Mounted on the frame 3 is a trigger 9, a fire-control member Hi for changing from semi-automatic to full-automatic firing, and a safety H for rendering the trigger mechanism inoperative. The fire-control mechanism is described and claimed in my copending application Serial No. 281,557 and the breech mechanism is described in a copending application of Harold Wesson, Serial No. 285,565, both filed on even date herewith.

The fore-grip 5 comprises an upper frame member 12 having inturned lips 23 sliding in dovetail grooves in the forward end of the receiver 2, the frame l2 sliding on to the receiver from the front. Fast to the frame member I2 is a depending box-like structure l3 which is open at the front to receive the cartridge magazine i l which is held in place by means of a catch 15. The holder I3 is secured to the frame I2 by means of rivets i6 and is closed at the bottom by a cap l1. The relationship between the magazine l4 and the holder 13 is shown and described more fully in the aforesaid application of Harold Wesson.

At the upper forward end of the receiver a sight is is mounted by means of inturned flanges l9 sliding into dovetail grooves in the top of the receiver, the sight sliding into the grooves from the front end of the receiver.

As shown in Fig. 4 the barrel 6 is provided at its rearward end with an external flange 20 5 which affords a forwardly-facing shoulder for holding the barrel in the receiver. The forward end of the receiver projects beyond the flange 20 and is provided with internal threads 2!.

Snugly fitting around the barrel immediately in front of the flange 28 is nut 22 which threads into the threaded portion 2! of the receiver. The body portion of the nut 22 has an external diameter great enough to overlap the inturned flanges 23 and [9 of the fore-grip 5 and the sight 18. Thus when the nut is threaded into the receiver it retains not only the barrel 4 but also the fore-grip or cartridge holder and the sight. To prevent angular displacement of the barrel relatively to the receiver a semi-circular key 24 is mounted in a slot at the lower forward end of the receiver by means of a pin 25.

To disassemble the parts at the forward end of the receiver it is necessary merely to unscrew the nut 22 whereupon the barrel may be slipped 25 out of the receiver and the fore-grip and sight may be slipped out of their grooves in the exterior of the receiver.

It should be understood that the present disclosure is for the purpose of illustration only and that this invention includes all modifications and equivalents which fall within the scope of the appended claims.

I claim:

1. A firearm comprising a receiver having a threaded portion at its forward end and dovetail grooves extending rearwardly from its forward end, a sight and a cartridge holder having sliding parts fitting in said grooves, a barrel having a forwardly facing shoulder at its rearward end, a key for holding the barrel in predetermined angular relationship to the receiver, and a nut attached to said portion with a face seating against said shoulder and against forwardly facing surfaces of said sight and ward end, a sight having a slidable part fitting in said groove, a barrel having a forwardly facing shoulder at its rearward end, a key for holding the barrel in predetermined angular relationship to the receiver, and a nut attached to said portion with a face seating against said shoulder and against forwardly facing surfaces of said sight.

3. A firearm comprising a receiver having a threaded portion at its forward end and dovetail grooves extending rearwardly from its forward end, a sight and a cartridge holder having sliding parts fitting in said grooves, and a nut attached to said portion with a face seating against forwardly facing surfaces of said sight and holder.

4. A firearm comprising a receiver having a threaded portion at its forward end and a dovetail groove extending rearwardly from its forward end, a cartridge holder having a sliding part fitting in said groove, a barrel having a forwardly facing shoulder at its rearward end, a key for holding the barrel in predetermined angular relationship to the receiver, and a nut attached'to said portion with a face seating against said shoulder and against forwardly facing surfaces of said holder.

5. A firearm comprising a receiver having a threaded portion at its forward end and dovetail grooves extending rearwardly from its forward end, a sight and a cartridge holder having sliding parts fitting in said grooves, a barrel having a forwardly facing shoulder at its rearward end, and a nut attached to said portion with a face seating against said shoulder and against forwardly facing surfaces of said sight and holder.

6. A firearm comprising a receiver having a threaded portion at its forward end and a dovetail groove extending rearwardly from its forward end, a sight having a sliding part fitting in said groove, and a nut attached to said portion with a face seating against forwardly facing surfaces of said sight.

7. A firearm comprising a receiver having a threaded portion at its forward end and a dovetail groove extending rearwardly from its forward end, and a cartridge holder having a sliding part fitting in said groove, and a nut attached to said portion with a face seating against wardly facing surfaces of said holder.

EDWARD S. POMEROY. 

